49 
at 24 feet. Here the formation is 1 foot to 2 feet wide, irregular and unpay¬ 
able. A level has been driven on it northward 40 feet to the No. 3 winze from 
the old workings, but the quartz along the whole length was poor. A level 
has also been driven on it southward 25 feet with no better prospect than was 
disclosed in the opposite direction, the reef about 3 
feet back from the face breaking up into small spurs 
of uninviting appearance. In the cross-cut at 26 feet 
east of the shaft, a winze reached water at 16 feet in 
depth (191 feet below surface). In the bottom of this 
the reef is also broken and unpayable. 
The south level at this depth was driven with the 
hope of meeting with a similarly pitching shoot which 
may exist above the one already worked. From the 
present shaft, this and the extension of the north level 
is the only work possible, but the prospects so far as 
the levels have progressed cannot be said to be 
encouraging. 
The workings of this mine show that the reef is an 
pf irregular deposit of quartz on an east-dipping slide, 
which has cut through and ruptured an anticline. 
That the rocks of the Marong gold-field have been 
folded like the beds at Bendigo has long been known, 
and two anticlines have been located, on Wilson’s 
Hill, a small Ordovician inlier about half-a-mile south¬ 
east of Mr. Thomas’s lease, where extensive mining 
operations on spurs and legs have been conducted with 
generally payable results. So far as can be learned the 
cap of a saddle reef has not yet been discovered, but that such exists there 
can be little doubt. Quite recently several leases on this hill and to the west¬ 
ward of it have been granted, and it seems that the locality is about to be given 
the attention which it deserves. The slates and sandstones by their colour 
and texture appear to be well down in the auriferous series. Sites for the 
shafts of the new ventures should be properly selected, and sinking persisted 
in. On the outskirts of Bendigo there is a greater tendency to drive levels 
than to continue sinking shafts, and as a consequence many promising shows 
have been closed down. On the lease in question it is to be hoped that sinking 
will be proceeded with ; but if this be decided on it will be necessary, or at 
least advisable, to sink a new shaft larger than the present main one, and on 
the eastern side of centre country. 
[26.7.10.] 
Fig. 21.—Section of 
Shaft. 
Scale, 80 feet to 1 inch. 
NOTES ON THE DISTRICT EMBRACING DIAMOND HILL AND 
ADELAIDE GULLY, CASTLEMAINE. 
By H. S. Whitelaiv, Field Geologist. 
The known lines of reefs traversing that portion of the Castlemaine field 
lying between Castlemaine and Campbell’s Creek on the north and south, and 
the Maryborough railway line and Diamond Hill on the east and west, are 
in order from east to west the Dan O’Connell, Harvey’s Jumble, Bennett’s 
Coolgardie, and Bennett’s Western. 
